Lege Artis Medicinae

[Antiplatelet therapy with acetylsalicylic acid - Cardiovascular indications and haemorrhagic complications]

KISS Nóra1, KISS Róbert Gábor1

FEBRUARY 20, 2010

Lege Artis Medicinae - 2010;20(02)

[Acetylsalicylic acid effectively blocks the activation of platelets, and becomes a basic element of antithrombotic therapy of patients with high cardiovascular risk. Decrease of platelet reactivity is due to the irreversible inhibition of COX- 1 isoenzime in platelets during treatment. Choosing the right dose is still not an easy task. Bleeding side effects are frequently seen in patients treated with this drug worldwide. Clinical benefit does not improves with escalated doses (300 mg), however the risk of haemorrhagic events increases. Therefore acetylsalicylic acid dose should be reduced to the effective minimal dose (75-150 mg daily) after the acute phase of atherothrombosis in order to prevent side effects. Effect of acetylsalicylic acid differs individually, it might be important screening out those patients who respond less to the drug. Resistance is still an evolving field, proper methodology is to be determined. Right indications of acetylsalicylic acid needs balance between reaching clinical benefit and avoiding side effects. The Hungarian Cardiovascular Therapeutic Consensus Conference 2009 suggested acetylsalicylic acid in primary prevention for those males only, who have overt cardiovascular risk, and SCORE result is more than 10%, with no gastrointestinal haemorrhage in medical history, and with a well-controlled hypertension. Lifelong aspirin prevention should be used after all diagnosed cardiovascular atherothrombotic event as a cornerstone of secondary prevention with low dose (75-150 mg daily) in both genders.]

AFFILIATIONS

  1. HM Állami Egészségügyi Központ, MTA-SE Gyulladásbiológiai és Immungenomikai Kutatócsoport

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